Toán Lớp 4: BT 5
a) 2/5 + 3/5 : 2/7 + 5/3 : 3/4 + 5 : 3/4 + 5 : 3/5 -1/2 : 13/2 -5 : 6 – 3/7 : 1/3 – 1/4 + 1/5
b) 2/3 x 4/5 : 7/2 x 3 : 4/7 : 3/5 : 5/8 : 3 : 5 :1/2
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Toán Lớp 4: BT 5
a) 2/5 + 3/5 : 2/7 + 5/3 : 3/4 + 5 : 3/4 + 5 : 3/5 -1/2 : 13/2 -5 : 6 – 3/7 : 1/3 – 1/4 + 1/5
b) 2/3 x 4/5 : 7/2 x 3 : 4/7 : 3/5 : 5/8 : 3 : 5 :1/2
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